1112521321 has 2 divisors, whose sum is σ = 1112521322. Its totient is φ = 1112521320.

The previous prime is 1112521303. The next prime is 1112521331. The reversal of 1112521321 is 1231252111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1047493225 + 65028096 = 32365^2 + 8064^2 .

It is an emirp because it is prime and its reverse (1231252111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112521321 - 2⁹ = 1112520809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1112521331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556260660 + 556260661.

It is an arithmetic number, because the mean of its divisors is an integer number (556260661).

Almost surely, 2^1112521321 is an apocalyptic number.

It is an amenable number.

1112521321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112521321 is an equidigital number, since it uses as much as digits as its factorization.

1112521321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120, while the sum is 19.

The square root of 1112521321 is about 33354.4797740873. The cubic root of 1112521321 is about 1036.1821684027.

Adding to 1112521321 its reverse (1231252111), we get a palindrome (2343773432).

The spelling of 1112521321 in words is "one billion, one hundred twelve million, five hundred twenty-one thousand, three hundred twenty-one".